getInputVerifier

Gets an input verifier that verifies the input.
REMARK: Implementors must not assume that the verifier will be used on all platforms,
so the validator implementation must consider inputs that won't be verified
REMARK: Implementors should prefer to use regular expressions instead of IInputVerifier's
if possible because SPI implementations that use 'AJAX' can implement client side verification easier.

getAcceptingRegExp

Gets the regular expression that describes the valid inputs.
REMARK: Implementors should prefer to use regular expressions instead of IInputVerifier's
if possible because SPI implementations that uses e.g 'AJAX' can implement client side verification easier.
REMARK: Implementors must not assume that the regular expression will be used on all platforms